1733 - James Whatman sets up a papermill

1756 - Whatman credited with inventing 'wove' paper

1780s? - William Balston apprenticed to Whatman

1806 - William Balston founds Springfield Mill to make handmade paper.

1861 - William & Richard Balston take over the running of the mill

1914 - begin making filter paper for scientific and industrial applications

1974 - W & R Balston merge with Angel Reeve International to form Whatman Angel Reeve

1990 - restructure and renamed Whatman PLC